Pipe-joint delineator



2 Sheets-Sheet 2.

(No Model.)

G. S. KIMBALL. PIPE JOINT DELINEATOR.

INT/F7710) q/ GeozyeJiKZMwll Patented Feb. 5, 1889.

NiTnn STATES PATENT OrFicE.

GEORG Q h. KIMBALL, OF DETROIT, MHTHIGAN.

PIPE-JOINT DELINEATOR.

SPECIFICATION forming part of Letters Patent No. 397,132, dated February 5, 1889.

Application filed October 9, 1888.

To all whom it may concern.-

Be it known that I, GEORGE KIMBALL, of Detroit, in the county of \Vayne and State of Michigan, have invented new and useful Improvements in Pi pe-J oint Delineators; and I hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, which form a part of this specification.

My invention relates to that class of conformators or delineators which show the shape and position of the orifice it is necessary to cut in one pipe to admit another, and at the same time delineates the templet by which to cut the sheet metal in order to form a pipe with its end so shaped that it will fit in the orifice cut for it and form a joint.

The object of my invention is to provide means for delineating on the surface of one pipe the shape of the orifice necessary to admit another pipe, and also at the same time give the form of the templet by which to cut a sheet of metal, so that when formed into a pipe its end will be of such a configuration as to fit into the orifice cut in the other pipe and form a joint.

The ordinary method of determining the shape of the orifice to be cut in one pipe and the form to be given to the end of the other pipe to fit in such orifice is to take the branch pipe, apply its end to the pipe to which it is to be joined, and then cut out a small segment on the end, then try it, and out out another piece, and so on, cutting out piece after piece until the end is finally fitted to the main pipe. The orifice to be cut in the main pipe is marked out by the branch pipe thus fitted on. This process is used whenever the pipe is made of thin sheet metal. \Vhere the pipe is of heavy metal it is necessary to resort to the geometrical problem of how to determine the eurve made by the intersection of two cylinders and then transfer it to the pipes.

Figure 1 is a perspective view of the delineator with a part of the upper plate cut away. Fig. 2 is a detail perspective View of one of the arms. Fig. 3 is an enlarged plan view of the upper side of one of the arms. Fig. 4 is a vertical section of my device, showing two connected together.

Fig. 5 is a perspective Fig. 6 is view of another form of my device.

Serial No. 287,770. (No model.)

a view of one of the sections of the flexible jacket detached. Fig. 7 is aview of the flexible jacket unrolled with frame. Fig. 8 is a view of one of the sections of the jacket. Fig. 9 is an end view of a section.

A represents the upper plate of my delineator.

A represents the lower plate. These plates should be circular in form, and are connected .by the standards a a a, which may be fastened in any convenient way.

B is the main driving-shaft, which is operated by the milled head B, or any other suitable means. This shaft passes through the upper plate at its center and is suitably journaled therein, and is stepped in suitable journal-bearings at the center of the lower plate. To this shaft and above the upper plate is keyed the geared wheel 0. This geared wheel meshes into the pinions d d, which are keyed onto the upper end of the shafts D D. The shafts D D are j ourna led in the upper and lower plates. To these shafts, between the upper and lower plates, are keyed the pinions E E. These pinions actuate the extension-arms F F by means of the racks ff on the sides of the arms.

G G are slides out in the upper plate, and G G are slides cut in the lower plate, in which the extension-arms F F reciprocate. The outer extremities of the extension-arms should be rounded slightly, so as not to project beyond a circle circumscribed around the outer sides of the needles or pins H H. The extension-arms are recessed on their outer ends, h h, for the purpose of receiving the de- I I l are slots out in the upper sides of the extension-arms.

I I are springs fastened in the slots I I and impinge against the pins H 1-1 when they are inserted in the recesses h 71 in such a manner as to prevent their downward movement, while the upward movement isunobstructed.

II: M are the delineating. pins or needles inserted in the recesses 7/,v 71 in the ends of the extension-arms. The heads of the pins, when pins are used, should be fiat on one side, so that the head of the pin should not project beyond the side ol the pin. \Vhen in use, the points of these needles or pins are brought in contact with the sides of the main pipe and delineate the outline of the orifice to be cut to receive a pipe havin the san'ie diameter as the diameter of the circle circumscribed around the outer ends of the extension-arms. Instead oi. using these pins inserted in the arms, the jointed jacket L may be placed around the ends of the extension-arms.

M M are the jointed sections of the jacket. m m are the hinges ol. these sections, the pins or needles ll ll serving as the pintle ot' the hinges.

N N are brackets on. the sections, one being near the upper and one near the lower end.

O is a rectangular frame or block which is laid on the jacket when unrolled, and is brought in contact with the ln'ackets m m in order to keep the sections M M in the same relative position they were in when on the extension-arms. The points of the needles will show the line by which to cut. the sheet metal to form a pipe which will tit in the orifice in the main pipe.

To use my device easily and with accuracy, it will be necessary to have two securely joined together, as shown in Fig. 41, one above the other, in order to maintain the requisite directi on and steadiness ot' the pins or needles. I connect the two together by means of nuts internally sorew-threadml on the upper plate of the one and on the lower plate of the other, into which are screwed rods y, hav ing' right and left hand screws at opposite site ends; but this connection may be made in any other convenient way. When the two machines are thus connected, the needles or pins having two bearings are held firmly in line. If the flexible jacket is used, thebraeket N should be above the upper arm and the bracket N below the lower arm. The shaft B on the two should be rotated to extend or retract the arms until the extension of the arms is equal to the diameter of the launch pipe. Then the two pins on the opposite sides of the delineator and at the highest point ot' the curve of the main pipe are pushed out equally until they rest on the pipe. If the branch pipe enters the main pipe at an angle, the pins are unequally projected, the difference of the project-ion being determined by the an gle at which the branch pipe enters the main pipe. The other needles are then pushed out successively until their points rest on the pipe. A line drawn through thepoints of the needles resting on the main pipe will show the conformation of the orifice to be cut for the admission of the branch pipe.

Then place the delineator on the sheet metal to be cut for the branch pipe. Mark on the sheet the position of: one of the needles, then roll the del ineator over until another needle comes in contact with the sheet and mark the position of its point, then roll the delineator over until a third needle comes in contact with the sheet and mark the position of its point, and so on until the position of the points of all the needles are designated on the sheet. Then a line drawn through these points on the sheet will delineate the conformation ot' the unrolled end of the branch pipe to be inserted in the orifice in the main pipe. Care must be taken to roll the delineator in a straightline and at a right;- angle with the length of the needles.

It is evident. that in case only one size of pipe were used for the branch pipe the extensible arms, with. the machinery to extend them, mi ghtbe replaced by fixed arms without. departing from the spirit of my invention. In the case of using only one size of pipe for the branch pipe a drum, K, Fig. 5, of the size of the branch pipe and long enough to tit between the braekets on the jointed jacket, can be employed to fill out the jacket and. hold the sections in position, instead of the extensible arms.

If the branch pipe is tapering, then one of the sets of extension-arms must be of a greater diameter than the other, pFOPOllJlOIlitl to the different diameters of the tapering pipe.

\i'hat I claim as my invention is .l. The combination of the upper and lower plates, the means for extendingand retract ing the exteiision-arms, the -xt'( nsible arms, and the delineatiugmeedles, substantially as described.

2. The combination ol' the upperand lower plates, the mechanism for simultaneously extending or retrz'icting the extensible arms, the extensible arms, and the delimeator-nctr dles, si'lbstautially as described.

3. The combination of: the upper and lower plates, the mechanism for exttimding and retracting' the extensible arms, the extensible arms, the gnii'les tor the extensible arms, and the delineating-noodles, substantiall y as described.

4. The combination ol the upper and lower plates, the mechanism for extending and retracting the extensible arms, the guides for the extensible arms, the extensible arms, the spring on the arm to retain the needle, and the delineatingeneedle, substanl ia'lly as described.

5. The cmnbinatitm ot' the upper and lower the extensible arms, the extensible arms, the flexible jacket, and the delineating-pins, substantially as described.

'7. The combination of the upper and lower 5 plates, the arms, the flexible jacket, and the delineatingneedles, substantially as described.

8. The combination of the flexible jacket, the delineating-needles, and the means for 1 0 extendingthe flexible j aeket to a circular form, and means for preserving the alignment of the sections of the flexible jacket when in a circular form, substantially as described.

9. The combination of the flexible jacket, the delineating-needles, and the means for I 5 preserving the alignment of the sections of the jacket when unrolled, substantially as described.

GEO. S. KIMBAL'I lVitnesses:

CHARLES W. NOBLE, M. E. HUNT. 

